Adam,
I wanted to reach out and thank you for sharing the function of PreviewAggregator in your Blinking/Comparing Views and Previews video found in the Fundamentals course. I have been experiencing an issue with my ZWO EAF, and I was able to create an image from six previews that displays the issue I am experiencing, in sequence. I am now awaiting a response from ZWO, and I think the previews image will be quite helpful. The attached file is an image that displays what I was able to create and send to ZWO customer service. I apologize for the quality of the image; I was unable to figure out how to upload one of higher resolution.

Thanks!